I run the zone and it's mainly because it allows me to play uptempo and not worry about my lesser stamina guys. They can rest on zone, plus in my case (d2 tark) most average teams seem to be one dimensional. You'll have your occasional teams that can both hit in and out but the majority is one or the other. If that's the case the zone works out pretty well because you can key in on one target.
Along with scholarships, I usually take 1 walk on a season so I have more money for my "key" recruits.